SgdriskillGT
Well-Known Member
- Joined
- Jul 30, 2018
- Threads
- 32
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- 204
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- Location
- Alexandria, VA
- First Name
- Scott
- Vehicle(s)
- 2019 GT350R Ruby Red
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- 1
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- #1
My 2019 GT350R is only able to reach front camber settings of -2.2 deg left and -1.8 deg right with Ford's adjustable strut top mounts. That's not enough for my purposes of track use, so I reached out to Ford Performance to understand if this is in their expected range.
Kyle at FP was able to get some good info back from a chassis engineer who helped design the mounts, so I thought I'd pass it along here. My goal was to get down to at least -2.5 deg on both sides, and it looks like I WON'T be able to hit that. I know others have gotten better results (due to more neg camber from the factory presumably), but this is my experience. Here's their answer below, hopefully it is helpful to others with the same interest.
FYI had Vorshlag plates installed and hit -2.7 on both sides, although the left side can go to -2.9.
"Hi Scott,
We got some very good insight from the chassis engineer below:
The majority of the adjust strut mount design work was on the GT500 Track Pack where it showed us the car could go down to -2.25deg from the -1.06deg nominal curb weight position. Due to package space limitations, we could only get around 1.1-1.2 deg of camber change from the plates. If the 19MY GT350R starts at -1.12, Iād expect the car to be able to go to around -2.2deg. However, this is all dependent on the vehicle build variation. The plant alignment allows for Ā±0.75 of camber variation from nominal, which means the GT350R could leave the plant at -0.37deg, where the adjustable plates could only get it to roughly -1.5deg in the worst case. So while the -2.5deg is a little bit outside of the nominal range, most vehicles should be able to reach over -2deg.
In my opinion, if the left to right camber split is off a little bit, Iād take a look at if the subframe might be shifted a little bit on the bolts inside the hole slop, which is possible due to assembly plant build variation. If the subframe can be re-centered, then Scott could get to -2deg on both sides. Beyond that, as you mentioned, Iād look at the strut to knuckle attachment.
Again, these are curb weight numbers, with the weight of a driver, all the camber numbers are more negative.
In regards to the caster on a 19MY GT350R, we shoot for 6.92Ā±0.75 of caster in the nominal camber position, so without seeing the pre-alignment, 6.8 seems realistic. There is no real way to adjust caster on these vehicles, but again itās possible to look if the subframe is not centered, it possibly could be sitting a little rearward on the bolts. If they loosen the subframe bolts and try to shift it forward, and slightly to the right, that might get the alignment centered."
I
Kyle at FP was able to get some good info back from a chassis engineer who helped design the mounts, so I thought I'd pass it along here. My goal was to get down to at least -2.5 deg on both sides, and it looks like I WON'T be able to hit that. I know others have gotten better results (due to more neg camber from the factory presumably), but this is my experience. Here's their answer below, hopefully it is helpful to others with the same interest.
FYI had Vorshlag plates installed and hit -2.7 on both sides, although the left side can go to -2.9.
"Hi Scott,
We got some very good insight from the chassis engineer below:
The majority of the adjust strut mount design work was on the GT500 Track Pack where it showed us the car could go down to -2.25deg from the -1.06deg nominal curb weight position. Due to package space limitations, we could only get around 1.1-1.2 deg of camber change from the plates. If the 19MY GT350R starts at -1.12, Iād expect the car to be able to go to around -2.2deg. However, this is all dependent on the vehicle build variation. The plant alignment allows for Ā±0.75 of camber variation from nominal, which means the GT350R could leave the plant at -0.37deg, where the adjustable plates could only get it to roughly -1.5deg in the worst case. So while the -2.5deg is a little bit outside of the nominal range, most vehicles should be able to reach over -2deg.
In my opinion, if the left to right camber split is off a little bit, Iād take a look at if the subframe might be shifted a little bit on the bolts inside the hole slop, which is possible due to assembly plant build variation. If the subframe can be re-centered, then Scott could get to -2deg on both sides. Beyond that, as you mentioned, Iād look at the strut to knuckle attachment.
Again, these are curb weight numbers, with the weight of a driver, all the camber numbers are more negative.
In regards to the caster on a 19MY GT350R, we shoot for 6.92Ā±0.75 of caster in the nominal camber position, so without seeing the pre-alignment, 6.8 seems realistic. There is no real way to adjust caster on these vehicles, but again itās possible to look if the subframe is not centered, it possibly could be sitting a little rearward on the bolts. If they loosen the subframe bolts and try to shift it forward, and slightly to the right, that might get the alignment centered."
I
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